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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/base/simd/convert_yuv_to_rgb.h" | 5 #include "media/base/simd/convert_yuv_to_rgb.h" |
6 #include "media/base/simd/yuv_to_rgb_table.h" | 6 #include "media/base/simd/yuv_to_rgb_table.h" |
7 | 7 |
8 #define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x))) | 8 #define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x))) |
9 #define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \ | 9 #define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \ |
10 (((x) + (y)) > 32767 ? 32767 : ((x) + (y)))) | 10 (((x) + (y)) > 32767 ? 32767 : ((x) + (y)))) |
(...skipping 21 matching lines...) Expand all Loading... |
32 g >>= 6; | 32 g >>= 6; |
33 r >>= 6; | 33 r >>= 6; |
34 a >>= 6; | 34 a >>= 6; |
35 | 35 |
36 *reinterpret_cast<uint32*>(rgb_buf) = (packuswb(b)) | | 36 *reinterpret_cast<uint32*>(rgb_buf) = (packuswb(b)) | |
37 (packuswb(g) << 8) | | 37 (packuswb(g) << 8) | |
38 (packuswb(r) << 16) | | 38 (packuswb(r) << 16) | |
39 (packuswb(a) << 24); | 39 (packuswb(a) << 24); |
40 } | 40 } |
41 | 41 |
| 42 static inline void ConvertYUVAToARGB_C(uint8 y, |
| 43 uint8 u, |
| 44 uint8 v, |
| 45 uint8 a, |
| 46 uint8* rgb_buf) { |
| 47 int b = kCoefficientsRgbY[256+u][0]; |
| 48 int g = kCoefficientsRgbY[256+u][1]; |
| 49 int r = kCoefficientsRgbY[256+u][2]; |
| 50 |
| 51 b = paddsw(b, kCoefficientsRgbY[512+v][0]); |
| 52 g = paddsw(g, kCoefficientsRgbY[512+v][1]); |
| 53 r = paddsw(r, kCoefficientsRgbY[512+v][2]); |
| 54 |
| 55 b = paddsw(b, kCoefficientsRgbY[y][0]); |
| 56 g = paddsw(g, kCoefficientsRgbY[y][1]); |
| 57 r = paddsw(r, kCoefficientsRgbY[y][2]); |
| 58 |
| 59 b >>= 6; |
| 60 g >>= 6; |
| 61 r >>= 6; |
| 62 |
| 63 b = packuswb(b) * a >> 8; |
| 64 g = packuswb(g) * a >> 8; |
| 65 r = packuswb(r) * a >> 8; |
| 66 |
| 67 *reinterpret_cast<uint32*>(rgb_buf) = b | (g << 8) | (r << 16) | (a << 24); |
| 68 } |
| 69 |
42 extern "C" { | 70 extern "C" { |
43 | 71 |
44 void ConvertYUVToRGB32Row_C(const uint8* y_buf, | 72 void ConvertYUVToRGB32Row_C(const uint8* y_buf, |
45 const uint8* u_buf, | 73 const uint8* u_buf, |
46 const uint8* v_buf, | 74 const uint8* v_buf, |
47 uint8* rgb_buf, | 75 uint8* rgb_buf, |
48 ptrdiff_t width) { | 76 ptrdiff_t width) { |
49 for (int x = 0; x < width; x += 2) { | 77 for (int x = 0; x < width; x += 2) { |
50 uint8 u = u_buf[x >> 1]; | 78 uint8 u = u_buf[x >> 1]; |
51 uint8 v = v_buf[x >> 1]; | 79 uint8 v = v_buf[x >> 1]; |
52 uint8 y0 = y_buf[x]; | 80 uint8 y0 = y_buf[x]; |
53 ConvertYUVToRGB32_C(y0, u, v, rgb_buf); | 81 ConvertYUVToRGB32_C(y0, u, v, rgb_buf); |
54 if ((x + 1) < width) { | 82 if ((x + 1) < width) { |
55 uint8 y1 = y_buf[x + 1]; | 83 uint8 y1 = y_buf[x + 1]; |
56 ConvertYUVToRGB32_C(y1, u, v, rgb_buf + 4); | 84 ConvertYUVToRGB32_C(y1, u, v, rgb_buf + 4); |
57 } | 85 } |
58 rgb_buf += 8; // Advance 2 pixels. | 86 rgb_buf += 8; // Advance 2 pixels. |
59 } | 87 } |
60 } | 88 } |
61 | 89 |
| 90 void ConvertYUVAToARGBRow_C(const uint8* y_buf, |
| 91 const uint8* u_buf, |
| 92 const uint8* v_buf, |
| 93 const uint8* a_buf, |
| 94 uint8* rgba_buf, |
| 95 ptrdiff_t width) { |
| 96 for (int x = 0; x < width; x += 2) { |
| 97 uint8 u = u_buf[x >> 1]; |
| 98 uint8 v = v_buf[x >> 1]; |
| 99 uint8 y0 = y_buf[x]; |
| 100 uint8 a0 = a_buf[x]; |
| 101 ConvertYUVAToARGB_C(y0, u, v, a0, rgba_buf); |
| 102 if ((x + 1) < width) { |
| 103 uint8 y1 = y_buf[x + 1]; |
| 104 uint8 a1 = a_buf[x + 1]; |
| 105 ConvertYUVAToARGB_C(y1, u, v, a1, rgba_buf + 4); |
| 106 } |
| 107 rgba_buf += 8; // Advance 2 pixels. |
| 108 } |
| 109 } |
| 110 |
62 // 16.16 fixed point is used. A shift by 16 isolates the integer. | 111 // 16.16 fixed point is used. A shift by 16 isolates the integer. |
63 // A shift by 17 is used to further subsample the chrominence channels. | 112 // A shift by 17 is used to further subsample the chrominence channels. |
64 // & 0xffff isolates the fixed point fraction. >> 2 to get the upper 2 bits, | 113 // & 0xffff isolates the fixed point fraction. >> 2 to get the upper 2 bits, |
65 // for 1/65536 pixel accurate interpolation. | 114 // for 1/65536 pixel accurate interpolation. |
66 void ScaleYUVToRGB32Row_C(const uint8* y_buf, | 115 void ScaleYUVToRGB32Row_C(const uint8* y_buf, |
67 const uint8* u_buf, | 116 const uint8* u_buf, |
68 const uint8* v_buf, | 117 const uint8* v_buf, |
69 uint8* rgb_buf, | 118 uint8* rgb_buf, |
70 ptrdiff_t width, | 119 ptrdiff_t width, |
71 ptrdiff_t source_dx) { | 120 ptrdiff_t source_dx) { |
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154 const uint8* v_ptr = vplane + (y >> y_shift) * uvstride; | 203 const uint8* v_ptr = vplane + (y >> y_shift) * uvstride; |
155 | 204 |
156 ConvertYUVToRGB32Row_C(y_ptr, | 205 ConvertYUVToRGB32Row_C(y_ptr, |
157 u_ptr, | 206 u_ptr, |
158 v_ptr, | 207 v_ptr, |
159 rgb_row, | 208 rgb_row, |
160 width); | 209 width); |
161 } | 210 } |
162 } | 211 } |
163 | 212 |
| 213 void ConvertYUVAToARGB_C(const uint8* yplane, |
| 214 const uint8* uplane, |
| 215 const uint8* vplane, |
| 216 const uint8* aplane, |
| 217 uint8* rgbaframe, |
| 218 int width, |
| 219 int height, |
| 220 int ystride, |
| 221 int uvstride, |
| 222 int astride, |
| 223 int rgbastride, |
| 224 YUVType yuv_type) { |
| 225 unsigned int y_shift = yuv_type; |
| 226 for (int y = 0; y < height; y++) { |
| 227 uint8* rgba_row = rgbaframe + y * rgbastride; |
| 228 const uint8* y_ptr = yplane + y * ystride; |
| 229 const uint8* u_ptr = uplane + (y >> y_shift) * uvstride; |
| 230 const uint8* v_ptr = vplane + (y >> y_shift) * uvstride; |
| 231 const uint8* a_ptr = aplane + y * astride; |
| 232 |
| 233 ConvertYUVAToARGBRow_C(y_ptr, |
| 234 u_ptr, |
| 235 v_ptr, |
| 236 a_ptr, |
| 237 rgba_row, |
| 238 width); |
| 239 } |
| 240 } |
| 241 |
164 } // namespace media | 242 } // namespace media |
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